DE102014207554B4 - Motor vehicle with a ferrule connection assembly - Google Patents

Abstract

Motor vehicle with at least two components (12, 32; 26, 66; 15, 25) which are connected to one another by means of a fastening means (11, 21), the components (12, 32; 26, 66; 15, 25) being connected by means a connection arrangement (10, 20, 30, 40, 50, 60) via the fastening means (11, 21) are connected to one another and each have a recess which is arranged along a connection axis and wherein the fastening means (11, 21) through the recesses of the components (12, 32; 26, 66; 15, 25) is passed through, with the components (12, 32; 26, 66; 15 , 25) are clamped together by a prestressing force applied axially in the direction of the connection axis, with a connection sleeve (19, 29, 39, 59) being arranged in the recess of at least one component (12, 32), through which the fastening means (11, 21 ) is passed through, with an expansion of the connecting sleeve (19, 29, 39, 59) in the axial direction along the connecting axis being greater than the thickness of the associated component (12, 32) in the region of the recess and with the connecting sleeve (19, 29, 39, 59) has at least one wedge surface (13', 14a', 14b', 39a', 39b'), the wedge surface (13', 14a', 14b', 39a', 39b') causing a Fastening means (11, 21) axially applied prestressing force leads to a radial prestressing force in the region of the connecting sleeve (19, 29, 39, 59), as a result of which the connecting sleeve (19, 29, 39, 59) is in a functionally connected state of the connecting arrangement (10, 20 , 30, 40, 50, 60) is clamped radially in the recess of the component (12, 32) and the connection arrangement (10, 20, 30, 40, 50, 60) is a two-plate connection arrangement (10, 20, 30 , 40, 50, 60), one of the components (12, 32; 26, 66) has two opposing connecting lugs (12, 32; 26, 66) which extend essentially parallel and which each have a recess, and the other component (15, 25) extends into an area between the connecting lugs (12, 32 ; 26, 66), the fastening means (11, 21) extending through the recesses in the connecting straps (12, 32; 26, 66) and through the recess of the component ( 15, 25). ; 26, 66) extending component (15, 25) is clamped between the connecting straps (12, 32; 26, 66) by the applied prestressing force, characterized in that in the two-tab connecting arrangement (10, 20, 30, 40 , 50, 60) located between the connecting straps (12, 32; 26, 66) extending component (15, 25) is a rubber bearing (15, 25) and the connecting straps (32, 66) are made of plastic at least in the area of the recesses.

Description

The invention relates to a motor vehicle with a connection arrangement for connecting at least two components to one another by means of a fastening means, the components each having a recess, the recesses being arranged along a connection axis and the fastening means being passed through the recesses in the components, with the components being clamped together in a functional connection state of the connection arrangement by a prestressing force applied axially in the direction of the connection axis, and a connecting sleeve being arranged in the recess of at least one component, through which the fastening means is passed. Furthermore, the invention relates to a connecting sleeve for a connecting arrangement for connecting at least two components to one another by means of a fastening means.

In the case of generic connection arrangements, such as those used with a screw as a fastening means for screwing a wishbone bearing to a rear axle support of a two-track motor vehicle, the maximum shearing force that can be transmitted depends on a frictional force generated between the components or on a frictional force generated between the fastening means and the components to be connected to one another. The frictional force is in turn dependent on a prestressing force applied axially along the connection axis to the fastening means and on the coefficient of friction of the components or the fastening means.

If the force to be transmitted is greater than the frictional force, the components can move or shear against one another, i.e. the frictional force cannot withstand the force to be transmitted. However, in the case of safety-relevant connection arrangements, this must be prevented at all costs, so that the fastening means does not shear off and the connection does not fail as a result.

This means that in a connection arrangement of the type described above, the degree of material utilization in relation to the support of shearing forces corresponds approximately only to the coefficient of friction, which is on average between 0.09 and 0.16. In other words, in a connection arrangement of the type described above, the degree of material utilization is only around 10-20% of the degree of material utilization of a connection arrangement in which the shearing forces are supported via a pure form-fitting connection.

Setting the connection, which can lead to a reduction or even a loss of the preload, due to operating loads, such as temperature loads, or due to a reduction in the coefficient of friction of the components or the fastening means, can also lead to a reduction in the frictional force or even a loss of the frictional force.

Thus, for safety-relevant connection arrangements, correspondingly high preload forces are required, which continue to enable reliable transmission of the forces that occur even after a reduction in the preload force or the coefficients of friction.

Furthermore, if there are manufacturing or assembly tolerances in the axial direction of the components to be connected, i.e. if the components are not already in contact without an applied preload force, a distance between the components in the axial direction must be compensated before the actual preload force is applied to generate the required frictional force, so that a frictional force can be transmitted between the components at all. As a rule, this is brought about by a corresponding, additional proportion of the prestressing force. This means that connection arrangements with component tolerances occurring in the axial direction require even higher preload forces. However, very high preload forces can lead to a deformation of the components in the connection area, which is undesirable, particularly in the case of components made of brittle material, such as components made of fiber-reinforced plastic, in particular in components made of SMC (Sheet Molding Compound) or in components made of die-cast aluminum, since excessive deformation, in particular excessive bending, can lead to failure of the components in the connection area and thus to failure of the connection.

Thus, for generic connection arrangements that require very high prestressing forces, correspondingly large dimensioned fasteners and correspondingly large dimensioned components are required, which has a disadvantageous effect on the weight of the connection arrangement. And components with larger dimensions, in turn, require higher preload forces in order to compensate for axial tolerances.

In particular, in the case of generic connection arrangements in the form of two-tab connection arrangements, in which one of the components to be connected has two opposite, substantially parallel connecting shackles, and the other component extends into an area between the connecting shackles and which extends between the connec If the component extending through the shackles is clamped in a functionally connected state by a prestressing force applied by means of the fastening means between the connecting shackles, the shackles can be undesirably bent inward due to the high prestressing forces required, particularly if axial tolerances have to be compensated for.

To reduce the prestressing force of a generic screw connection, in particular with a two-plate screw connection, the suggests DE 10 2010 046 768 A1 For example, to use a screw with a special screw sleeve element with an internal thread, which is supported on both connecting straps. By supporting the screw sleeve element on the connecting straps, additional support can be achieved in addition to the frictional force with which the component extending between the connecting straps is clamped between the connecting straps, so that higher shearing forces can be absorbed with the same prestressing force. However, the connection arrangement described does not allow for tolerances to be compensated for in the axial direction.

In addition, the DE 39 10 644 A1 propose a device for connecting two telescopically arranged parts, in which only small forces act on the inner part during tightening of the nut and in which the play between a sleeve and the outer part does not have such a detrimental effect. In addition, while the nut is being tightened, the sleeve rests against the wall of the opening with a larger width and thus compensates for any play that may have arisen during manufacture. In addition, this radial contact results in clamping forces, by which the forces acting axially and on the inner part are reduced, so that it is not deformed if it is designed as a hollow profile. The sleeve can be spread using a cone.

The object of the present invention is to provide an alternative connection arrangement for a motor vehicle, which enables axial tolerances, in particular axial manufacturing and assembly tolerances, to be compensated for, in particular without requiring higher preload forces.

This object is achieved for a motor vehicle by a connection arrangement having the features of claim 1 with a connection sleeve corresponding to claim 8. Advantageous and preferred configurations of the invention are the subject matter of the further claims and are explained in more detail below. The wording of the claims is made part of the content of the description by express reference. To avoid repetition, some of the features mentioned below are only described once, i.e. only in connection with the connection arrangement, the connection sleeve or the motor vehicle, but apply independently to both the connection arrangement and the connection sleeve as well as to the motor vehicle.

A motor vehicle according to the invention with a two-plate connecting sleeve connection arrangement is characterized in that the motor vehicle has a connection arrangement in which the component extending between the connecting straps is a rubber bearing and the connecting straps are made of plastic at least in the area of a recess.

In this two-plate connection arrangement, in which one of the components to be connected has two opposite, substantially parallel connecting plates, each having a recess, the other component, which extends into an area between the connecting plates, also has a recess. In this case, the fastening means is passed through the recesses in the connecting straps and through the recess of the component arranged between the connecting straps. In this case, the connecting sleeve is arranged in the recess of at least one connecting strap. In a functional connection state, the component extending between the connection straps is clamped between the connection straps by the applied prestressing force. The wedge surface of the connecting sleeve causes a prestressing force applied axially via the fastening means to result in a radial prestressing force in the area of the connecting sleeve, so that it is at least partially radially braced in the recess of the connecting lug when the connection is functional.

An expansion of the connecting sleeve in the axial direction along the connecting axis is greater than the thickness of the associated component in the area of the recess, and the connecting sleeve has at least one wedge surface, the wedge surface causing a prestressing force applied axially via the fastening means to result in a radial prestressing force in the area of the connecting sleeve, so that the connecting sleeve is at least partially radially braced in the recess of the component when the connecting arrangement is in a functionally connected state.

The prestressing force applied in the axial direction causes a frictional force between the components that counteracts shearing forces and thus supports the components.

Due to the connecting sleeve inserted into the recess of at least one component, the extent of which in the axial direction is greater than the thickness of the associated component in the area of the recess, so that the connecting sleeve projects beyond the recess of the associated component on at least one side, any existing axial tolerances can be compensated for with a corresponding axial extent of the connecting sleeve, i.e. with a corresponding width of the connecting sleeve. The connecting sleeve preferably protrudes on both sides of the recess or beyond the recess.

Deformation occurring as a result of axial tolerances can thus be reliably avoided by this motor vehicle connection arrangement according to the invention, so that brittle components in particular, in particular made of a fiber-reinforced plastic, for example CFRP or SMC, or made of die-cast aluminum can be connected particularly advantageously with a connection arrangement according to the invention.

Furthermore, the wedge surface of the connecting sleeve, which is preferably formed circumferentially, i.e. over the entire circumference, or the wedge surface of the connecting sleeve together with another wedge surface of the connecting arrangement configured to correspond to the wedge surface, causes a radial force component to be generated from a prestressing force applied in the axial direction, which can cause radial bracing of the connecting sleeve in the recess, so that the connecting sleeve can be firmly braced with the fastening means, as a result of which an improved support of occurring shearing forces can be achieved.

The corresponding wedge surface is preferably formed by the connecting sleeve itself, one of the components or by the fastener itself. The size of the radial force depends directly on a wedge angle at which the wedge surface is inclined or extends to the connection axis.

At least one wedge angle is preferably 50° to 80°, in particular 55° to 75°. A wedge angle between 60° and 70° has proven particularly advantageous. A further wedge angle of a wedge surface designed to correspond to the wedge surface of the first wedge angle is preferably correspondingly 100° to 130°, particularly preferably 105° to 125°, in particular 110° to 120°.

The recess is an opening or a hole, preferably a through hole, in particular a circular or a slot-shaped through hole.

The fastening means is preferably a screw, with the screw being particularly preferably screwed to a screw nut to generate the prestressing force, i.e. a connection arrangement according to the invention is preferably designed as a screw connection. In an alternative embodiment, the screw can also be screwed to a blind rivet nut to generate the prestressing force. Of course, the fastening means can also be a rivet or the like. In principle, any fastening means that is suitable for applying a corresponding prestressing force or for generating a corresponding clamping is suitable.

In a preferred embodiment, the connecting sleeve is formed from at least two sleeve sections arranged directly next to one another or one above the other in the axial direction, each of which at least partially has a wedge-shaped annular cross-section, each with a wedge surface, the sleeve sections being arranged and designed in such a way that the wedge surfaces face each other and have corresponding wedge angles, so that a prestressing force applied in the axial direction when the connecting arrangement is produced initially causes the adjacent sleeve cross-sections to slide or slide over one another on the wedge surfaces and later causes a radial displacement tension of at least parts of the connecting sleeve in the recess.

At least one sleeve section particularly preferably has a trapezoidal annular cross section with two wedge surfaces. A connecting sleeve with such a sleeve section can be used to generate a form fit between the sleeve section and an adjacent component or an adjacent fastening means designed to correspond to the wedge surfaces of the sleeve section, in addition to a force fit, i.e. a frictional force. As a result, an even further improved support of the shearing forces can be achieved, as a result of which the degree of material utilization can be increased. As a result, the fastening means in particular can be made smaller. However, the components, in particular the connecting lugs of a two-lug connection with a connection arrangement according to the invention, can also be dimensioned smaller, so that a secondary lightweight construction effect can be achieved.

In a particularly preferred alternative embodiment, the connection arrangement has a connecting sleeve, which is formed by a single sleeve section, the sleeve section having at least one at least partially wedge-shaped annular cross-section with a wedge surface, preferably a trapezoidal annular cross-section with two wedge surfaces, and the component adjoining the sleeve section in the axial direction and/or the fastening means having a wedge surface designed to correspond to the wedge surface of the sleeve section.

The connection arrangement preferably has at least one sleeve section which is a slotted ring, particularly preferably a slotted circular ring or a slotted oval ring or a slotted ring. A radial rigidity of the sleeve section can be greatly reduced by the slit, so that the sleeve section can expand slightly as a result of a radial force and can thus be clamped with a small radial force for a firm seat in the recess.

A connecting sleeve according to the invention is characterized in that the connecting sleeve is designed for a connecting arrangement according to the invention and can be inserted into a recess of a component, the connecting sleeve having at least one wedge surface which, when the connecting sleeve is arranged functionally in a connecting arrangement according to the invention, has the effect that the application of an axial prestressing force via the fastening means leads to a radial prestressing force in the region of the connecting sleeve, so that the connecting sleeve is at least partially radially braced in the recess of the component when the connecting arrangement is in a functionally connected state.

In a preferred embodiment, the connecting sleeve is formed from at least two sleeve sections arranged one above the other in the axial direction, each of which at least partially has a wedge-shaped annular cross-section, each with a wedge surface, wherein the sleeve sections are designed in such a way and can be arranged in a functional arrangement of the connecting sleeve in a connecting arrangement in the recess of a component in such a way that the wedge surfaces face each other and have corresponding wedge angles, so that a prestressing force applied in the axial direction when the connecting arrangement is produced initially causes the sleeve cross-section to slide off e causes on the wedge surfaces and later a radial tension of at least parts of the connecting sleeve in the recess.

Particularly preferably, at least one sleeve section has a trapezoidal annular cross section with two wedge surfaces.

In a particularly preferred, alternative embodiment, the connecting sleeve is formed by only a single sleeve section, the sleeve section having at least one at least partially wedge-shaped annular cross-section with a wedge surface, preferably a trapezoidal annular cross-section with two wedge surfaces.

At least one sleeve section is preferably a slotted ring, particularly preferably a slotted circular ring or a slotted oval ring or a slotted ring.

A motor vehicle according to the invention is characterized in that the components are connected to one another by means of a connection arrangement according to the invention.

In a preferred embodiment, the motor vehicle has a connection arrangement according to the invention in the form of a two-plate connection arrangement, with the component extending between the connection plates preferably being a rubber bearing.

Particularly preferably, the connecting lugs are made of plastic, at least in the area of the recess, preferably of fiber-reinforced plastic, in particular of SMC (Sheet Molding Compound).

In a particularly preferred embodiment of a motor vehicle according to the invention, the motor vehicle has a fiber composite component and an aluminum component, which are connected to one another by means of a connection arrangement according to the invention, the fiber composite component preferably being a CFRP shear panel and the aluminum component preferably being an aluminum axle support.

In addition to the claims and the description, these and other features are also apparent from the drawings, whereby the individual features can be implemented individually or in combination in the form of sub-combinations in an embodiment of the invention and can represent advantageous and individually protectable designs for which protection is claimed here.

In the following, the invention is explained in more detail using a preferred exemplary embodiment, with the invention being illustrated schematically in the attached drawings. 1a shows a section of a first embodiment game of a connection arrangement according to the invention in a sectional view, 1b a sleeve section of a connecting sleeve according to the invention in an individual representation, 2a a second embodiment of a connection arrangement according to the invention in a sectional view and 2 B the sleeve section 1a . 3a shows a detail of a third embodiment of a connection arrangement according to the invention in a sectional view, while 3b shows two different embodiments of a sleeve section of a connecting sleeve according to the invention in an individual representation. The 4 , 5 , and 6a each show a further exemplary embodiment of a connection arrangement according to the invention or a detail thereof in a sectional view. 6b shows the connecting sleeve or the sleeve section 6a . All of the features described in more detail can be essential to the invention.

1a shows a detail of a first exemplary embodiment of a connection arrangement 10 according to the invention, which is designed as a so-called two-plate connection arrangement 10, in a sectional view. The connecting arrangement 10 has a screw 11 with a screw head 11a, which is guided through a recess in a connecting strap 12 and another strap (not shown here) in a first component 12 and through a recess in a second component 15 .

The shackle 12 is part of an axle carrier and the component 15 is a rubber bearing in the form of a wishbone bearing, which can be braced between the shackle 12 and the other shackle (not shown here) by means of the screw 11 or clamped between the shackles and thus attached to the axle carrier.

The representation in 1a shows the connection arrangement 10 during the manufacture of the connection arrangement, ie in a connection state that is not yet functional, ie the rubber bearing 15 is not yet clamped or braced between the tabs in this state of the connection arrangement 10 . In particular, no prestressing force has yet been applied in the axial direction, ie along a connection axis.

In order to manufacture a functional connection condition of the connection arrangement 10, the screw 11 with its end not shown here is screwed up with a mother, for example with a conventional hexagon nut or the like, that a predefined, necessary axial preliminary force is applied to the connection arrangement 10, so that there is sufficient friction between the tubes and the rubber bearing 19 in order to enable adequate support of shear forces f, which act perpendicular to the connection axis.

A connecting sleeve 19 according to the invention is inserted into the recess of the lug 12, the connecting sleeve 19 in this exemplary embodiment being composed of three sleeve sections 13, 14a and 14b, which are each formed by a slotted circular ring, as is shown, for example, for the sleeve section 13 in 1b is shown. The sleeve section 13 has a trapezoidal annular cross section and the sleeve sections 14a and 14b each have an at least partially wedge-shaped or at least partially triangular annular cross section.

The connecting sleeve 19 according to the invention with its three sleeve sections 13, 14a and 14b extends in the axial direction on both sides beyond the lug 12, i.e. the extension of the connecting sleeve 19 in the axial direction along the connection axis is greater than a thickness or width of the lug 12 in the area of the recess. As a result, tolerances, in particular manufacturing and/or assembly tolerances, can be compensated for axially between the rubber bearing 15 and the component with the lug 12 and the second lug, not shown here, so that inward bending of the lugs can be avoided when a correspondingly large prestressing force is applied. As a result, the lugs or a neighboring structure adjoining them can be dimensioned smaller, resulting directly in savings potential with regard to the weight of the connection arrangement 10 .

In this embodiment, all three sleeve sections 13, 14a and 14b each have at least one wedge surface 13', 14a' or 14b', which are designed to correspond to one another. The wedge surfaces 13 ′ each extend at an angle of about 70° to the connection axis or the trapezoidal sleeve section 13 has a trapezoidal internal angle of about 110° on its side facing the screw 11 . The wedge surfaces 14a′ and 14b′ are designed correspondingly and in this exemplary embodiment are inclined by an angle of approximately 110° to the connection axis, or the sleeve sections 14a and 14b each have an inner angle of approximately 70° on their inside.

If an axial prestressing force is transmitted via the screw head 11a to the sleeve section 14b of the connecting sleeve 19 according to the invention, the wedge surfaces 13', 14a' and 14b' of the sleeve sections 13, 14a and 14b the generation of a radial force component, which causes the sleeve section 13 to expand radially and is thus radially braced in the recess of the tab 12. Furthermore, the three sleeve sections 13, 14a and 14b are braced against one another. A frictional connection is thus generated by applying a preload force. As a result, an improved support of shearing forces that occur can be achieved, in particular a distribution of the shearing forces over a larger area of the screw, as a result of which local force peaks can be reduced and the risk of the screw shearing off can be reduced.

2a shows a second embodiment of a connection arrangement 20 according to the invention, also in a sectional view. This embodiment, shown in an operative connection condition, also shows a two-link connection assembly 20 as shown in FIG 1a . The connection arrangement 20 is also used to connect a rubber bearing 25 to two brackets 12 and 26 of an axle carrier, the rubber bearing 25 being braced or clamped by means of the screw 21 between the brackets 12 and 26 .

In this exemplary embodiment, the connecting sleeve 29 according to the invention is formed by only a single sleeve section 13 with a trapezoidal annular cross section, which is also designed as a slotted circular ring, see FIG 2 B .

In this exemplary embodiment, however, a further annular sleeve section is not provided to the left and right of the sleeve section 13 to generate the radial force for bracing the sleeve section 13 in the recess of the bracket 12, as in the case of FIG 1a shown embodiment, but corresponding to the wedge surfaces 13 'of the sleeve portion 13 formed wedge surfaces 25' and 21a' are each formed by the rubber bearing 25 and the screw head 21a.

As a result, no further sleeve sections in the form of a wedge ring are required in addition to the sleeve section 13 .

With such a connection arrangement 20, a form fit can be created directly between the rubber bearing 25 and the connection sleeve 29 and thus indirectly between the rubber bearing 25 and the lug 12, as a result of which a significantly improved support of shearing forces F introduced into the connection arrangement 20 can be achieved, since these now no longer have to be supported only via the frictional force. As a result, the material utilization rate increases. Furthermore, lower frictional forces are sufficient to support the forces that occur. As a result, lower pretensioning forces are required and the screw 21 and/or the brackets 12 and 26 can be dimensioned smaller, resulting in potential savings with regard to the weight of the connection arrangement 20 . A connection arrangement 20 according to the invention thus brings about a secondary lightweight construction effect.

3a shows a third exemplary embodiment of a connection arrangement 30 according to the invention with a rubber bearing 15 which is to be clamped by means of a screw 11 with a screw head 11a between a bracket 32 and another bracket, not shown here. An annular sleeve 38 made of V2a steel is inserted into the lug 32, which in this exemplary embodiment is made of SMC (Sheet Molding Compound), i.e. a fiber composite material, as well as a connecting sleeve 39 according to the invention, which in this exemplary embodiment is formed from two wedge-shaped sleeve sections 39a and 39b, each with a wedge-shaped annular cross-section. The two sleeve sections 39a and 39b each have a wedge surface 39a' or 39b`, which are arranged and designed to correspond to one another. In this case, too, the sleeve sections 39a and 39b are each designed as a slotted circular ring, see FIG 3b . In principle, however, it is also conceivable for a sleeve section of a connection arrangement according to the invention to be designed in the form of an annular slot, for example as in 3b shown sleeve portion 39c.

4 shows a further exemplary embodiment of a connection arrangement 40 according to the invention, this exemplary embodiment differing from that in 1a shown embodiment differs in that the connection arrangement 40 has a tab 32 made of SMC, in which an annular sleeve 38 made of V2a steel is used or pressed.

5 shows a fifth exemplary embodiment of a connection arrangement 50 according to the invention, this connection arrangement 50 being designed for connecting a rubber bearing 15 to two lugs of a component, with only the lug 32 also being shown here. In this exemplary embodiment, the lug 32 is also made from SMC and has an inserted annular sleeve 38 made from V2a steel.

In this case, the connecting sleeve 59 according to the invention is composed of two sleeve sections. Namely from a sleeve section 13 with a trapezoidal annular cross-section and two wedge surfaces 13' and a sleeve section 14a with a wedge-shaped annular cross-section and a wedge surface 14a', which is designed to correspond to the wedge surface 13' on the left in this illustration. A wedge surface 21a ′, designed to correspond to the right wedge surface 13 ′, is formed by the screw head 21a of the screw 21 .

In 6a Another exemplary embodiment of a connection arrangement 60 according to the invention is shown, this also being a two-plate connection arrangement 60 with two plates 32 and 66 made of SMC, in the recess of which a steel annular sleeve 38 or 68 is inserted or pressed. A rubber bearing 25 is clamped or clamped between the tabs 32 and 66 by means of a screw 21 which is screwed into an ordinary hexagon nut 27 . Like the previous connection arrangements, the connection arrangement 60 also has a connection sleeve according to the invention, namely a connection sleeve 29 which, as in the case of FIG 2a shown embodiment is formed from a single sleeve portion 13. This embodiment differs only in the design of the tabs 32 and 66 from that in 2a illustrated embodiment.

7 shows an exemplary embodiment of a connection arrangement 70 not according to the invention, whereby in this exemplary embodiment, however, a rubber bearing is not clamped between two brackets of a further component by means of a screw, but which is provided for connecting a shear panel 72 made of CFRP to an aluminum axle support 76 made of die-cast aluminum.

A screw 71 is provided as the fastening means, which, however, is not screwed by means of a conventional hexagon nut, but rather engages in a blind rivet nut 74 inserted into the aluminum axle support 76, which has a corresponding internal thread. A connecting sleeve 79 is inserted into the CFRP shear panel 72, which in this case is formed by a single sleeve section 73 with a stop.

The sleeve section 79 also has an at least partially trapezoidal annular cross section and two wedge surfaces 73'. In this exemplary embodiment, too, the connecting sleeve 79 has a greater extent in the axial direction than the CFRP shear panel 72 and thus also enables axial tolerance compensation. Furthermore, the application of an axial prestressing force also causes a radial bracing of the connecting sleeve 79 in the recess of the component 72 according to the same principle as in the case of 2a and 6a shown embodiments with the connecting sleeve 29 or the sleeve section 13.

The wedge surfaces 71' and 74`, which are required to generate the radial force component and are designed to correspond to the wedge surfaces 73`, are formed by the screw head 71 and the blind rivet nut 74, respectively. The sleeve section 73 is preferably also a slotted annulus. In order to achieve improved axial bracing of the components and thus an improved frictional connection, the connecting sleeve 79 or the sleeve section 73 has corresponding hook-shaped stops in an area adjacent to the screw head of the screw 71, which protrude from the recess and "hook behind" the CFRP shear panel.

As with the based on 6a In the exemplary embodiment described, a form fit is additionally produced in the connection arrangement 70 which is not according to the invention, which also causes improved support of shearing forces.

8th shows a further exemplary embodiment of a connection arrangement 80 which is not according to the invention and which, like that in 7 The exemplary embodiment shown is provided for connecting a CFRP shear panel 72 to an axle support 76 made of die-cast aluminum, a blind rivet nut 84 with an internal thread for receiving the screw 81 also being inserted into the axle support 76 . In this case, however, the blind rivet nut 84 and the screw 81 do not have a wedge surface or an annular cross-section that is at least partially wedge-shaped.

In this exemplary embodiment, the connecting sleeve 89 of the connecting arrangement 80, which is not according to the invention, is formed by the two sleeve sections 89a and 89b, which each have a wedge surface 89a' or 89b', which are designed to correspond to one another in order to generate a radial force component from an axially applied prestressing force and thus to cause a radial bracing of the sleeve section 89a in the CFRP shear panel 72.

Of course, a large number of modifications, in particular structural modifications or with the most diverse combinations of the features described above, are possible in relation to the exemplary embodiments explained, without departing from the content of the patent claims.

Reference List

10, 20, 30, 40, 50, 60, 70, 80

connection arrangement

11, 21, 71, 81

Hex bolt

11a, 21a

screw head

12, 32

first tab

13

trapezoidal sleeve section

13`

Wedge surface of the trapezoidal sleeve section

14a, 14b

wedge ring sleeve section

14a', 14b'

Wedge surface of the wedge ring-shaped sleeve section

15, 25

Rubber bearing

25'

wedge surface of the rubber bearing

26, 66

second tab

27

hex nut

19, 29, 39, 59, 79, 89

connecting sleeve

38, 68

steel ring sleeve

39a, 39b, 39c

wedge ring sleeve section

39a', 39b`

Wedge surface of the wedge ring-shaped sleeve section

72

CFRP shear panel

73, 83a

Sleeve section with stop

73`

Wedge surface of sleeve section with stop

74, 84

blind rivet nut

74`

wedge surface of the blind rivet nut

76

Aluminum axle carrier

83b

wedge ring sleeve section

83b'

Wedge surface of the wedge ring-shaped sleeve section

f

shear force

Claims (6)

Motor vehicle with at least two components (12, 32; 26, 66; 15, 25) which are connected to one another by means of a fastening means (11, 21), the components (12, 32; 26, 66; 15, 25) being connected to one another by means of a connecting arrangement (10, 20, 30, 40, 50, 60) via the fastening means (11, 21) and one in each case Have recesses which are arranged along a connection axis and wherein the fastening means (11, 21) is passed through the recesses of the components (12, 32; 26, 66; 15, 25), wherein in a functionally connected state of the connection arrangement (10, 20, 30, 40, 50, 60) the components (12, 32; 26, 66; 15, 25) are connected by an axial prestressing force applied in the direction of the connection axis are clamped together, with a connecting sleeve (19, 29, 39, 59) being arranged in the recess of at least one component (12, 32), through which the fastening means (11, 21) is passed, with an expansion of the connecting sleeve (19, 29, 39, 59) in the axial direction along the connecting axis being greater than the thickness of the associated component (12, 32) in the area of the recess and wherein the connecting sleeve (19, 29, 39, 59) has at least one wedge surface (13', 14a', 14b', 39a', 39b'), the wedge surface (13', 14a', 14b', 39a', 39b') having the effect that a prestressing force applied axially via the fastening means (11, 21) results in a radial prestressing force in the area of the connecting sleeve ( 19, 29, 39, 59), whereby the connecting sleeve (19, 29, 39, 59) is radially clamped in a functionally connected state of the connecting arrangement (10, 20, 30, 40, 50, 60) in the recess of the component (12, 32) and the connecting arrangement (10, 20, 30, 40, 50, 60) has a two A tab connection assembly (10, 20, 30, 40, 50, 60) wherein one of the components (12, 32; 26, 66) zwei gegenüberliegende, sich im Wesentlichen parallel erstreckende Verbindungslaschen (12, 32; 26, 66) aufweist, die jeweils eine Ausnehmung aufweisen, und das andere Bauteil (15, 25) sich in einen Bereich zwischen den Verbindungslaschen (12, 32; 26, 66) hineinerstreckt, wobei das Befestigungsmittel (11, 21) durch die Ausnehmungen in den Verbindungslaschen (12, 32; 26, 66) und durch die Ausnehmung des zwischen den Verbindungslaschen (12, 32; 26, 66) angeordneten Bauteils (15, 25) hindurchgeführt ist, wobei die Verbindungshülse (19, 29, 39, 59) in der Ausnehmung einer Verbindungslasche (12, 32; 26, 66) angeordnet ist, wobei in einem funktionsgemäßen Verbindungszustand das sich zwischen die Verbindungslaschen (12, 32; 26, 66) erstreckende Bauteil (15, 25) durch die aufgebrachte Vorspannkraft zwischen den Verbindungslaschen (12, 32; 26, 66) eingespannt ist, dadurch gekennzeichnet , dass bei der Zwei-Laschen-Verbindungsanordnung (10, 20, 30, 40, 50, 60) das sich zwischen die Verbindungslaschen (12, 32; 26, 66) extending component (15, 25) is a rubber bearing (15, 25) and the connecting straps (32, 66) are made of plastic at least in the area of the recesses. motor vehicle after claim 1 , characterized in that the connecting straps (32, 66) are made at least in the area of the recesses from fiber-reinforced plastic, in particular from SMC (Sheet Molding Compound). Connection arrangement (10, 30, 40, 50) for a motor vehicle claim 1 or 2 , dadurch gekennzeichnet , dass die Verbindungshülse (19, 39, 59) aus wenigstens zwei, in axialer Richtung übereinander angeordneten Hülsenabschnitten (13, 14a, 14b, 39a, 39b) gebildet ist, die jeweils zumindest teilweise einen keilförmigen Ringquerschnitt aufweisen mit jeweils einer Keilfläche (13', 14a', 14b`, 39a', 39b`), wobei die Hülsenabschnitte (13, 14a, 14b, 39a, 39b) derart angeordnet und ausgebildet sind, dass die Keilflächen (13', 14a', 14b', 39a', 39b') einander zugewandt sind und korrespondierende Keilwinkel aufweisen, so dass eine in axialer Richtung aufgebrachte Vorspannkraft beim Herstellen der Verbindungsanordnung (10, 30, 40, 50) zunächst ein Abgleiten der Hülsenquerschnitte (13, 14a, 14b, 39a, 39b) an den Keilflächen (13', 14a', 14b', 39a', 39b') bewirkt und später eine radiale Verspannung wenigstens eines Hülsenabschnittes (13, 14a, 14b, 39a, 39b,) der Verbindungshülse (19, 39, 59) in der Ausnehmung. Connection arrangement (10, 20, 40, 50, 60) according to claim 3 , characterized in that at least one sleeve section (13) has a trapezoidal ring cross-section with two wedge surfaces (13'). Connection arrangement (20, 60) for a motor vehicle according to one of Claims 1 or 2 , characterized in that the connecting sleeve (29) is formed by a single sleeve section (13), the sleeve section (13) having at least one at least partially wedge-shaped annular cross-section with a wedge surface (13'), preferably a trapezoidal annular cross-section with two wedge surfaces (13`), and the component (15, 25) adjoining the sleeve section (13) in the axial direction and/or the fastening means (21) having a wedge surface (1 3') of the sleeve section (13) has a wedge surface (21a', 25'). Connection arrangement (10, 20, 30, 40, 50, 60) according to one of claims 3 until 5 , characterized in that at least one sleeve section (13, 14a, 14b, 39a, 39b) is a slotted ring, preferably a slotted circular ring (13, 29, 39a, 39b) or a slotted oval ring (39c).

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